Enclosed pressure-gas insulated busbar system with laterally extending taps



Jan. 5, 1965 E. A. FRowElN 3,164,557

ENCLOSED PRESSURE-GAS INSULATED BUSBAR SYSTEM WITH LATERALLY EXTENDING TAPS Filed NOV. 16, 1962 United States Patent O 3,164,667 ENQLSIED PRESSURE-GAS INSULATED BUSER SYSl'llttr' Wllltll LATERA LY EXTENi-HNG TAiia Egbertns Adrianus Froweiin, Nussbaumen, Switzerland, assigner to Ahtiengeseiischat Brown, Roveri is (Sie, Baden, Switzerland, a teint-steelt company Filed Nov. lo, 1962, Sere No. 233,192 @latins priority, application Switaerland Nov. 20, 1961 1l Qlaini. (Si. 17am-27) The invention concerns a pressure-gas insulated busbar system which is enclosed in a tube, the conductors being so arranged that two of them lie on a diameter of the tube and the third conductor is symmetrical with respect to the other two.

When taps have to be arranged in the plane of symmetry on both sides, a cyclic transposition of the conductors whilst maintaining their relative position cannot be applied. The relative position of the conductors should, however', remain unchanged so that the same bushing plate can ybe used throughout, with two conductors iocated on a diameter of the tube and the third conductor located symmetrically thereto. The purpose of the invention is to overcome this ditliculty.

rl`his is achieved in accordance with the invention by providing taps on two opposite sides, whereby for the tap on one or" the conductors located on the diameter, this conductor and the third conductor are each rotated by 90 in the same sense with respect -to `the initial position.

The invention is explained with reference to a constructional example.

FlG. 1 shows the internal arrangement of the conductors of a busbar system which is enclosed in a tube.

FIGS. 2 to 7, respectively, show in cross-sectional views the arrangement of the conductors at the various tap points, these views being taken respectively on lines 2-2 to 77 on FIG. 1.

Reference numeral 1 indicates the tubular casing and 2, 3, 4, 5 arethe pipe connections.

The double pipe connections 3 and 5 on both sides of the casing and the conductor arrangements associated therewith and shown in FlGS. 5 and 7 correspond to the invention.

The double pipe connection 4 together with the conduc- CFI ice

tor arrangement shown in FIG. 6 is obtained directly without applying the invention.

When, however, a tap for the conductor R, which lies on the diameter of the tube l, has to be provided in con- Jiunction with a double pipe connection 3 (FIG. 5), then this conductor R and the third conductor S, are in accordance with tthe invention each rotated by 90 in the same direction with respect to their linitial positions. The tap on conductor T (FlG. 7) for the double pipe connection S is obtained in a similar manner by displacing conductor T lying on the diameter and the third conductor S from the initial position (FIG. 6), both condoctors being rotated by 90 in the same sense but in opposite direction to the conductors of the arrangement shown in FIG. 5.

The main advantage of the arrangement according to the invention is that the conductors are displaced from their initial position by a minimum amount. The conductors inside the tubular casing have only to be bent to a slight extent. The spacing of the taps can thus be kept small.

What I claim is:

A tubular enclosed pressure-gas insulated busbar system with threeconductors and whereintwo of said conductors are located on a first diametral plane through the tubular enclosure while the third conductor is located on a second diametrial plane perpendicular to said first diametral plane, characterized inthat `taps are provided on two opposite sides in said second diametral plane in relation to the longitudinal axis of said tubular enclosure, these taps being arranged in pairs in the extension of each other, and that the taps for the conductors lying in said iirst diametral plane and for said third conductor are each displaced in the same direction by 90 from their initial position.

References Cited in the file of this patent UNITED STATES PATENTS V2,099,020 La nacer Nov. 16, 1937 2,569,223 Bowers Sept. 25, 1951 2,611,800 Naughton Sept. 23, 1952 FOREIGN PATENTS 288,885 Great Britain Apr. 19, 1928 

